/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

Class
	RBFFunction

Description
	Radial basis function virtual base class

Author
	Frank Bos, TU Delft.  All rights reserved.

SourceFiles
	RBFFunction.C
	newRBFFunction.C

\*---------------------------------------------------------------------------*/

#ifndef RBFFunction_H
#define RBFFunction_H

#include "typeInfo.H"
#include "runTimeSelectionTables.H"
#include "tmp.H"
#include "autoPtr.H"
#include "primitiveFields.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{


class RBFFunction
{
	// Private Member Functions

		//- Disallow copy construct
		RBFFunction(const RBFFunction&);

		//- Disallow default bitwise assignment
		void operator=(const RBFFunction&);


public:

	//- Runtime type information
	TypeName("RBFFunction");


	// Declare run-time constructor selection table

		declareRunTimeSelectionTable
		(
			autoPtr,
			RBFFunction,
			dictionary,
			(
				const dictionary& dict
			),
			(dict)
		);


	// Selectors

		//- Return a pointer to the selected RBF function
		static autoPtr<RBFFunction> New
		(
			const word& type,
			const dictionary& dict
		);


	// Constructors

		//- Construct null
		RBFFunction()
		{}

		//- Create and return a clone
		virtual autoPtr<RBFFunction> clone() const = 0;


	// Destructor

		virtual ~RBFFunction()
		{}


	// Member Functions

		//- Return RBF weights
		virtual tmp<scalarField> weights
		(
			const vectorField& controlPoints,
			const vector& dataPoint
		) const = 0;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //
